That would be your ulnar nerve. Sounds great that you can ask your BIL. It's possible you injured the nerve somehow, or it could be something like carpal tunnel syndrome. There are a lot of reasons why that nerve can be aggrevated and hopefully your BIL can help.
Unfortunately I know what the pain is like

When I was 12 years old I injured my ulnar nerve. I was sitting in a chair with a wooden armrest and banged my elbow on it, only the corner of the wood went between the bones. My arm and half my hand was numb for week and slowly got better. I saw a doctor and he said it was doubtful that I would ever fully recover and he's been right. It's now 12 years later and my ring finger, pinky, and that part of the my hand gets numb frequently.
I hope it's just something minor for you and that your BIL and fix you up in no time

__________________
Leila (28), DH (32)
Darling girl E - 4/27/05
Darling boy N - 4/1/08
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.